Machine for milling spirals.



' B. M. W. HANSQN. MACHINE FOR MILLING SPIBALS APPLICATION FILED SEPT. 9, 1905. 948,696.l

Patented Feb. 8, 1910.

'I SHEETSfSHBET 41.

B. M. W. HANSON. MACHINE FUE MILLING SPIBALS.

APPLlcTIoE funn SEPT. s, 1905.

Patented Feb.8,1910.

'I SHEETS-SHEET 2.

B. M. W. HANSON. MACHINE FOR MILLING SPIRALS. APPLICATION FILED SEPT. 9, 1905. 948,696. Pamd Feb.s,191o.

7 SHEETS-SHEET 3.

s, HANSON. MACHINE POB MILLING- SPIRALS. APPLICATIO FILED SEFT. 9, 1905.

Patented Feb.8,191'0.

v SHEETS-SHEET 4,

APPLICATION IILED SEPT. 9, 1905A.

Patented Feb. 8, 1910.

7 SHEBTS-SHEIT 5,

wfg?? B. M. W. HANSON.

MACHINE FOR MILLING SPIRALS.

APPLICATION FILED SEPT. 9. 1905.

Patented Feb. 8, 1910.

1 SHEETS-SHEET 6.

B. NL'W. III-N501?.v MACHINE FOR MILLNG SPIRALS.

APPLIGATIN FILED SEPT. 9, 1905.

Patented Feb. 8, 1910.

' s s of Fig. 7.

Vof Fig. 1.

UNTTED STATES PATENT onirica.

BEtl'Crl M. W. HANSON, OF HARTFORD, CONNECTICUT, ASSIGNOR TO PRATT & `\VHITNEY COMPANY, OF HARTFORD, CONNECTICUT, A CORPORATION OF NEW JERSEY.

MACHINE FQR MILLING SPIRALS.

Specieaton of Letters Patent.

Patented Feb. 8, 1910.

lTo all whom it may concern- Be it known that l, 1li-:NCT M.\V. HAN- soN, a citizen of Sweden, (having declared my intention of hecoming a citizen of the United- Staiesh) residing at. Hartford, in the county ot' llartford and State of Connecticut, have invented certaiirnew and useful improvements in Machines for Milling Spirale, oi which the following is a specification.

This invention relates to machines for milling` spirals such as. screuvthreads, worms or spiral work if any kind, and more ,particnlarly to that type of 'said machines covered h v Letters Patent of the United States,

issued to me on February 14,190.3, Number 782,237.

One of the principal objects of this invention he provision of an improved system of gearing for driving either the, leadscrcw from the spindle or the.v spindle from the lead screw, as circumstances may require, in milling threads of ditl'ereni: pitches.

A further objectof the invention is the provision ot improved means for driving the gearing for actuating the milling-cutter or other rotary tool for forming the spiral.

A further ohject` of the, invention is tht, provision of an improved drive for imparting a quick return movement to the lead screw.

Other objects of the invention will be hereinafter set forth.

In the accompanying drawings, Figure 1 is a side elevation of'a machine for milling spirals embodying my improvements. Fig. 2 is transverse vertical section ou line 2 2 Fig. 3 is a transverse vertical section on line 3 3 of Fig. 1. Fig. 4 is a longitudinal vertical lsection on line. 4 1 of Fig. 2. certain elements being represented in elevation. Fig. 5 is a horizontal section on line of Fig. 3. Fig. (l is a longitudinal 'vertical section on line G G'of Fig. 3. Fig.

'i' is a transverse section on line T T-of Fig. 1. Fig. 8 is a horizontal section on line Y Fig. 9 is a longitudinal vertical section on line 9 9 of Fig. 1. Fig. 1() is a transverse vertical sect-ion on line 10 10 of Fig. 1. Fig. 11 is a partialend view showing the. gearin connecting the spindle and lead-screw; an Figs. 12, 13, 14,

15, 16, 17 and 1S are detail views hereinafter mentioned.

`Like numerals designate similar parts throughout the several views.

Referring to the drawings, the numeral 1 designates the frame or hed of the machine, 2 the head-stock. and 3 the tail-stock, the latter carrying the usual .adjustable slide A1 and center 5. On the bed is litted a slide G which is providedwith a waj.' 'T for the re ception of a toolcarriagc 8, said tool-carriage being adjusted transversel)Y h v vlthe usual screw t). 'In the head-stock 2 is mounted a live-spindle l0 carrying a chuck (not shown) of any approved type for clamping the work, and this spindle Acarries a gear 11 to which power is applied for driving thelsame directl)v through a gear train subsequently described, or indirectly from the lead-screw, as will he hereinafter explained. v

Designated hy the numeral l! is the driving-shaft of the machine, said shaft carrying at one'cnd a stepped cone-palle)v 13. and being mounted in hearings 12 122 of the 'frame and cross-slide. Loos-ely surrounding said driving-shaft is a sleeve 1;, and splined to said sleeve is a clutch 11 having clutch teeth 1l 142 on its respective ends (see Fig. 4), and for shipping said clutch a fork 15 is provided. said forli heilig attached t0 a rock-shaft 16 carrying an operating lever 17, having a locking detent- 1S. Loose on the sleeve 12'- at one side 'of the clutch 14 is a short sleeve 19 having clutch teeth 19', and carrying a gear 2t), and rigid .with said sleeve 12vv on the opposite side of the clutch 14 are variable-speed gears 21, 21', '112, Q1, while loose on the sleeve 12X is a hub Q2 having a. clutch-face .22 and carrying a gear 222. Above the driving-shaft 1Q, and journalcd in hearings 2li-2%' of a gearbox or' housing 2l, is a tuhular shaft :25, slotted for a portion of its length at 25 for a purpose hereinafter stated, and loose on this tuhular shaft is a sleeve Q52, said sleeve carr 'ing variahle-speed gears designated generally by 26, and one of which is always in mesh with an idler A driven by the gear 20. and mounted on a stub-shaftl B, so that when the clutch 14 is in engagement. with the teeth 19 of sleeve 19 the sleeve 252 and the variable.`

.speed gears '226 lm ved to said sleeve will he rotated.

lu mesh with the variahlespred gears 26 anl the gears ol' a variable speed cone :27, said .gears lit-ing' looseljv mounted on a partitulnilar shaft vS slotted at the part of its length where the gears T are loraed at 28', said shaft heiug journa'led in bearings )29' ol the gear-hex 2l. and carrying ltereil thereto a pinion 30.

Loosely mounted ou a .short stationary shaft 8l in the upper part of the gear-box is a .sh-eve 32 rariving a spiral-gear 33 and a spuiugvar Il l, the gear :t3 heilig in mesh with a larger spiral-gear 35 rigid with n transverse shaft Bt?. carrying a pair of 'reverselythreaded worms 2572-37 as shown in Fig. 13, and one of which 3T has a rightfhand thread. engages a worin-wheel 38 loose on a Shah :if journaled in hearings Q -510 of the head-stock, said worin-wheel having a rhnvlx-taw 38. Splined to the shaft 39 is a eluteh il. having clutch teeth lli-4l". the latter living adapted. when the clutch is thrown to the right from the intermediate position shown in Figs. l and 12 to engage the rhiteh-teeth ofsaid norm-wheel, and thns to canse said Worm-wheel to drive the shaft 3S). Fixed to the shaft llf'is a huh 42, carrying a pinion 43,; and loose on said shaft a .spar-gnat il. the latter having a clutchfaf-e il@ adapted to be uigagetl by the clutch whennsaid elnteh is shifted tothe left. s

het'orestated the spindle l() is e ni ned with l l l a gear ll. and the pinion 43 engages said gear and drives the. spindle with a Slow spi-vd when the clutch is in engagement with #corni-wheel i 1 lroieeting from :1.bracket 45 of the headstotflt is stud-shaft 46, and on said studshalit a sleeve 477 carrying a belt-pulley t8 and a pinion a'hsaid pinion being in mesh irith the gear #t4 aforesaid, and this gearing being utilized for imparting a quick return movement to the lead screw and tool-carriage actuated thereby as will he hereinafter deserihed. For shifting this eluteirany desired means either matinal or automatic may he employed. hut there is shown for this purpose a forleand-lever device designated generally.' hy y In hearings of the frame in which the shifter 5t) is mounted is journaled a shaft 51,

:indou said shaft loosely mounted a pin ion having eluteh-teeth 52. said pinion heilig in mesh with au idler in engagement with the gear- 44 on the shaft 3%). Spliued to the shaft 5l is n elulrh :34 haring elutrh-teeth at earh end, and adjacent to the right-hanfl vlutvlvteeth and also ions-ff ou the shaft. is a worm-wheel 55, driven by the left -haud worm-wheel 37 aforesaid. Ad.-

llf-

l mesh 1th a gear 57 rigid with thedead- 65 screw 58.

Designated by 59 is :1 stud upon which is sleeved a eluteh-shifting lever 60, provided at its upper end with a gear segment 61, the

63 loosely mounted on a rock-shaft 64..

On the shaft 39, and exterior to the bear-j ing 40 is kegl'ed a pinion 65 in mesh with a 'gear 66 rig'ir with a shaft. 67, said shaft. be- V ing journaled in a bearing G8. This shaft 67 75 is reduced at its end, and has keyed on said reduced end n gear 69 of any desired diam# eter, and said gear meshes with a gear 70 which and a ear 71,1igid therewith, are loosely mounte on a stud 71 fitted for slid- 80 ing adjnstment in the usual swinging changegear lever 712.- On .theiend ,of the lend-A screw about which as an axis-said lever may be adjusted, is keyed a gear 72, driven .l b'y the gear 7l aforesaid. To the shaft (itis 86 secured an operating lever 73, and upon said shaft is loosely mounted the fork 50 for ac` tuating the'elutoh 41, as above described.4

the yoke 50 and the sleeveti is a sliding 90 chrteh 74:, having teeth 74 at its respective A ends, said teeth 74 engaging clutch-teeth G3" on the inner end of sleeve 63 when theV clutch is shifted to the left, and said teeth 74' en` ork 50 when the clutch is shifted to the clutch 74 a rod 75 is mounted in :i the frame.'said rod having u hook 75 atv its 1 clutch, and being secured after 'it' has. been shifted in either directionby a set-screw 752. To the inner end of shaft 59 is plvoted an -at itsend in a groove of theclntch 74, while its other arm 'Zorita-articulated to a4V link 77 pivoted to theTilad T8' of :t lever 78, the latter being pivoted at "itiz'to the head 79 of n` sliding rod Tft. 'lhjs rod passes through the end with a'kuoh Htl in,"r the rodand heating at one end against 72) thereof. and at its other 'extremthe head l tty agamst the frame. servesnormally to Keep' said `'shat't adjacent to the hearinff 23is af.

the driving shaft;v l2.

latter engaging a like segment 62 on a sleeve 70`4 Keyed to the shaft tit between the hub of l angle lever 7f3 one arm 76 of which is fitted und 88 vol" varying diameters, and keyed to 12S inner end for vengaging a.groove in the 10o raging eomplementui teeth-50' on-the hub of Q5" Y i i right, as shown in Fig. 14. "To hoera-te the j hearing. off the rod in the position illustrated in Fig. 14,'115

Normally the elutehes 41 and 54 are held gear 89, in mesh with a piuon89' rigid with' f For connecting any of the loose gears S5, SG, 87 and 88 to the shaft 25 suitable clutchnlechanism is necessary and while not limited in choice, there is shown for accoraplishing this result a rod 90 having a racisthread 90 at one end, and carrying at. iis' a series of holes 9" with any of which 'the plan fer may be engaged. 1n the bore @i the siiaft 28 a. rod 21S is mounted, said having rack-teeth S35', and carrying a dog J9 adapted to engage and lock t the shaft gear of the variable .speed sct This r-id is movable in a bea g 100' of a frame-pl-; 10C',.and is actuated by a pinion 101 carried. hy a transverse. shaft 102, provided with a crank -handle 103, sai-fl handle having a spring-actuated plunger or detent 10.1., adapted to he received in pcrforations of a.

105 rigid witlrthe frame-plate 10U, as shown in Fig. 2.

(in the. cross slide 8, which is adjnsta-.le transversely ot' carriage t) by the screw if -arr ing a hand-wheel t3 is mounted an angnlarly adjustable cutterfraaie 10G, in

jonrinil-hearings 10G' of which is mounted a spindle 16T to which the milling cutter 10S is secured. For driving this spindle any desired gearing may,v he employed, and there is shown for this purpose a pinion 101i in mesh with gearing 110 (scc dotted lines Fig. 8? actuated by a pinion 111 on a shaft- 112 aso journaled in the cutter-frame, said shaft, having rigid therewith a bevel-gear 113. In mesh with the gear 113 is a bevelpinion 111 rigid with a shaft 115 carrying at its end opposite said pinion a bevelgear 116.

Designated hy 117 is a shaft at rightanglcs to the shaft 115. and this shaft is journaled in hearings 118 ot a hood or covering'119 constituting part of the cutterf-rame, and carries within said hood a pair of loose opposing bevel-gears 12C-121, each in mesh with the gear 116. A sliding-clutch 122 is splined to the shaft intermediate the gears 12o-121, and may be shifted hy any desired means, for instance, a knob 122 to lock either of said gears to said shaft. Qn the end of shaft 11T is a bevel-gear 123, rigid with said shaft, and driven by means hereinafter described` To permit of angular adjustment of the utter-frame it is sleeved on trunnions 124-125, and the desired adust-ment is efiected by a'n-'orm-wl'leel lill ll 126, secured to the frame by pins 127, and actuated by a worm shaft. 128, the worin'- teeth serving as means for locking the frame against movemcnt after it has been adjusted.

In the hearing,r 12: of the arm 12l depending from carriage (3, mounted the hn'o 129 70 of a gear-ease 12S), said huh being tlanged at its inner end at 1292. In this huh is jorrnaled a sleeve 13() flanged at 130', and is splined at 131 to the driving-shaft, said sleeve being reduced at its end opposite the flange 130 to rcceive'a hevel-gear132 held in place h v a nut 13?. Rising from a lateral extension 129 of vthe gear-case 129 is a tubular extension 121-1, and in said extension is mounted a hearing 135 closed at its upper 8G end by a dust cap 13o. ln thc hearing a sleeve 13T journaled, and tir said sleeve. is keyed a hcvcl-grar 1218, said bevel-gear being in mesh with the gear 1252 aforesaid, as illustrated in Fig. 9, and said sleeve is keyed to a vertical shaft 1351 passing through the hearing. (ln its other side. the extension 131 has a plane-surface 12111', and resting against said plaine-surface is a har 110, hc d in place h v a groovcd cap 111 secured 90 to said plane surface hy screws 11;'. 15eneath the plane-surface the, lower part of the extension and thc top of the gear-case are cut away at 143 to permit. of thc extreme downward movement of the ba r. The sleeve 13T and tinshal't 13E) constitute together an extensible shaft. Designated hy 1-11 is another gear-casc, which protects a bevel-gear 145 on the upper end of the. shal't 139, said bevel-gear engaging a companion gear 123 100 on t'he shaft 11T for actuating the gearing for driving the milling cutter. This gearcase is extended at 144 to surround the gear 123, and is suspended by a hearing 146 from the sleeve-hearing 11S, around which 105 it has a rocking,r movement. Depending from the gear-case 144 is a sectional hub 147, in a horc of which is mounted a sleeve-hearing 14S through which thi` shaft 139 passes, and on its front .side this huh has 11G a plane-surface 117 against which the upper part of the bar 140 bears when secured in place b v a groovcd cap 1411, and screws 150. A sectional housing for the shaft 139 is thus proVided-the hanger 147 constituting one 115 part of said housing, and the tubular extension 134 the other part thereof.

lVhen the cross-slide 8 is moved in or out on the way of the carriage 6 b v its .screw 9, Y binding of the gearing would he' liable to 120 Occur unless provision were made to prevent it, and by clamping the binder-rod tight at one point and b v permitting it to slide freely in one of the caps, for instance 111, at another point it. will be seen that the neces. sary rocking movement of the parts for driving said shaft 117 is provided for, and there will be no cramping of the gears 123,

132, 13S and 145 when the cross slide is adl )usted t lot-nte the cutter with relation to l .shaft lit; (Fig. t'`).thert,h\4 rotating said shaft the work, and .free runningy of said lgears :nul

the shafts hy which they are carried is thus In the operation ot the improved machine power is applied hy helling to thc pulleY 13 'and driving-shaft 1'2, and the. clutches il A and at being in neutral position such gearing as is driven will idly revolve.

It it is desirable to drive ,the lead-screw 5S from the spindle l0,- the rod 75 is actuated to throw clutch T4 into engagement. with the hub of.

fork 50. During this movement of the clutch 15 74 the. hell-crank 7f3 is rockedand through link 77 throws the pivoted levcr'TS to the position shown in Fig. 14, thereby locatingr the upper laterally-projecting lngr or stud a of the Tdiead 78 in line with the plunger l83. By now grasping the knob 80 and pull- '59' et theA fork 50, and permitting the shaft 64,' now connected to the hub o the fork 50 by the clutch 74, to be rocked by the lever 73, and thus to the clutch 41 into engagement with the large worm-Y wheel 3S of shaft 39. In this-position of the parts the latch 82 will engage the lug 82 of clutch-yoke 60 'and will lock the clutch 5. '54 of shaft- 51 in' a neutral position. Vlhen coupled as just described and the clutch 14 is in its engaging positionfsliown in Figs. 4

and i8, power will be transmitted from th driving-shaft l2, through the pinion S9' keyed thereto, to. the gear 89 rigid with the tubular shaft 25, and 'said .Shaft will .he ro- 40 tated, and the gears 85, 86, 8T and 8S, which are loose thereon,will remain idle. lVhen,

how-sever, one of said gears is connected toits shaft by the clutch-dog 91 (for insta nc e, the gen1' 85 as shown in Fig. 5) said gear will,

46 of course, rotate with the shaft 25, and in the instance given hy inter-meshing with the gear 21 (Fig. 4 and 18) will rotate the sleeve. 12?. and the gears 21, 21', El, Q1 rigid with said sleeve, and as the clutch 14. in the in- 50Y stance given. is in engagement With-the lnili of the ,gear "J2:l said gear will alsovhe driven -liythc sleeve, and in turn will drive the end gear V rigid with the sleeve 252 loose on the shaft 25. This sleeve '252 has 'rigid therewith the series ot gears 26 of different diameters, -and said gears "2li drive the series 27 of. va

riahle-speed gears' loose on the shaft 28, and any of which may he coupled to said shaft hy the' clutch-'dog 99 in the manner aliove described, and when thus connected will ro Y tate said shaft and the pinion 30 keyed thereto. This pinion 30 drives the gear 34 keyed to the sleeve 32, liaise on the stationary sha ft l l! i i l l cngages'the worin-wheel rigid with the and thi-(nigh the worin Iii thereon driving the worin-wheel 3S on shaft. 2?!) Said shaft. f.arryin t thc fixed pinion 43 in nieslrwith the gear 11 ot the spindle 1t). Rotation of the chuck-spiinlle haviircr thus taken place power is' transmitted from said spindle through the change-gearing described and illustrated in Fig. 1t to the lead-screw 58, andiit. will traverse the carriage t and the cutter-flame' at the speed selected for theY work inV hand.

To drive the spinde from the lead-,screw the screw T52 (Fig. ll) is released, the knob on the rod T5 is grasped and the clutch 74 is shifted to engage the huh ti, carrying the scf-nient t'i2. thereinJ locking said huh to the shaft til, and said .screw again tightcned" to hold the rod in plate. -When the clutch is shifted to the left in the manner just described the angle-lever Tt'- is rocked to swing the lug (i of the T-head of lever T8 into line with the. end of'plnnger S3', and to carry the lug n' of said T-head awa vY from the plunger 83, which is then immediatelj)T advanced hy its springr Sl to canse the latch 81 to engage the arm 50` of fork 50 and lock said.

'fork and the clutchtt which it actuatesaf-ainst movement.' Now Vh v actuating the pull-rod 29 the lug b of the T-head 7S.of will.h engagethe end of plunger 83', force ever 78 1t inward and withdraw the hitch S2 from contact with the lug S2 of fork tit). the hub of saiil fork cari-ying segment G1 in mesh with the seguient (3:2 of hu'o (Silas aforesaid. Now hy turning the shaft (i4 by means of the lever T3 the, yoke tt) will lie actuated to throw the clutch 54 splined to shaft liti into niesh with the clutch-'hub ot the. worinwheel This couples the \\oijin\vlieel to the shaft 5l. and as saidV worin-,wheel is driven h v the left-hand worin 3T oftlie sliat't 36. said worin will now actuate the shaft, 5l

which will through the gears 5G and/5T rotate the lead-screw SiS, and said lead-screw will thronglithe change-gear train illustrated in Fig. 1l rotate the gear 11 and chuck-spindle 10. Should it he necessary 'at any time to impart movement in a Vreverse direction to-tlie lead-screw and the various gear-trains, this may he accomplished b?.

shifting the clutch 14 into engagement wit the clutchdnih l!) of geni- 20, when the varions sets of gearing will he actuated hy the idler A Vin mesh with one of thegears of the set 2li on sleeve 252. lVheii necessary to impart a vquick return movement to the carriage and when the leadscrewis drivenfroni thc spindle. saiduiuick return is obtained by throwingr the clutch -t into engagement with the gear 44. driven hy pulley 4Q and gmiltl. tliei'eliy imparting a reverse rotation4 and 3l and carrying the spiral-worni, which higher speed to the shaft. E52), said reverse Maese rotation and higher speed being transmitted to the lead-screw through pinion 65 gear (ifi and change-Gears 69, T0, "land "2, see Fig. 11. Whenthe spindle is driven from 5 the lead-screw, a quick return of the carriage is obtained by throwing the clutch 54 into engagement with the gear 52. said gear being driven in a reverse direction and at a higher speed thanthe worm-Wheel 55, by

l0 the pulley 48 through gears 49, 44, and 53.

This increased speed and reverse rotation are transmitted to the lead-screw through shaft 51, the Ipinion 56 keyed thereto and gear 57 rigid with the lead-screw.

With the variable-speed sets of gearing l described provision is made for twenty-four changes in speed of the lead-screw and spindie, but these sets may be variously changed to ati'ord a greater or less number of speeds 2O without departure from the invention.

As the carriage slides along the bed in either direction the hub of the bevel-gear 132'1noves with it along the driving-shaft. 1Q, and the gearing for actuating the cutter spindle is driven in the direction desired,

when the clutch l is in engagement with either of the oppositely-rotating bevel-gears 1Q() or 121, but when said clutchA is shifted to the'neutral posidon shown in Fig. 8 the .80 cutter will remain idle.

As above stated binding of the gears for driving the cutter-actuating gearing is prevented by the construction ully described and illustrated in Figs. 1, 9 and 17 when the cross-slide isi adjusted by its screw 9.

lt will thus beseen that either the spindle or the leadscrew may be driven one' from the other and in eitheiforward or reverse direction by the mechanism described and 40 .that a quicklreturn movement may be imparted to the carriage and cutter-medianv ism when desired. 'e

Changes ma}T be made in various details of the mechanism'shown and described without departurejrom'the invention, and likewise, various locking or stop devices may be substituted foithose illustrated in Fig. 14 without departure therefrom.

Having thus described my invention, what lclaim isn for transferring the etlect of the former to the latter, a sectional housing one section of whifh is mounted to swing about the axis of said firstmentioned shaft and thc other section of which moves 'with said slide, and

80 a slidlable connection between the sections of the housing to prevent relative lateral motion :if said sections, said, second shaft; being extensible and journaled in saidlxousing. I

2. The combination of a cross slide, atoolspindle supported by said cross slide, a rotary shaft supported by tixed bearings, a sectional housing one section of which is supported by said rotary shaftx for swinging movement and the other section of which is connected with said slide, a slidable connection between the sections of said housing, an extensible shaft journaled in said housing, and geared to said rotary shaft; and also to said tool-spindle.

3. The. combination of a slide, a spindle supported by said slide, a. rotary shaft, a sectional housing supported for swinging movement, an extensible shaft journaled in said housing and operatively connected with said rotary shaft and with said spindle, and means connecting the sections of said housing for relative movement longitudinally of said shaft and for preventing relative lateral movement of said sections.

4. The combination of a rotary shaft, a

sectional housing supfported for swinging movement by saizl sha an extensible shaft jonrnaled in said housing, gears for transferring the effect of said rotary shaft to said extensible shaf, one of which is inclosed by. the said housing, a cross-slide, a tool-spindle supported by said cross slide, means including gears one of which is inclosed by said housing. for transferring the effect o said extensible shaft to said tool-spindle, a slidablc connection between the.sections of the housing to prevent relative lateral motion' of, a rotary shaft journaled in said housing-- the latter turning about a relativelyA fixed axis, and a device on said slide operatively connected with said rotary shaft to be driven thereby.

G. The combination of a slide, a sectional swinging housing operatively connected with the slide the movement of the slide serving to swing said housing and the lat-A ter being movable about a fixed axis, a 1'0- tary shaft journalcd in said housing, a device on the slide operatively connected with said rotary shaft to be driven thereby, and means connecting the sections of said hous` ing foi-relative movement longitudinally of said shaft and for preventing relative lateral motion of said sections.

7. The combination of a sectional housing mounted for swinging movement, a rotary shaft journaled in said housing. and mealns connecting the sections of said housing for relativo movement longitudinillly of said los shat and for also preventing relative lat- Y eral inQveinent osmd sections.

said hanger.

8. The combination of a drivin shaft, a carnage having amrt 1n which said driving shaft 1s `10urnale n Sleeve mounted in a 'bearing of said part, and having a .tubular Slide, a tool-spindle jmu'nziled in Suid cultorframe, gearing carried by the cutter-frame for driving said toulspindle, :1 bearing in which a slnift of Said gearing is jonrnnled, :i combined gear-case and hanger snspendel'l from said bearing. 'a rod clamped tc the hanger, :i llorizontalslm'f, n gear-euse havinfrr :i vertical extensinn, a guiding clamp for the rod secured tsaid vertical extensiun, an extengible slznie jonrnnled in the. vertieal extension and hanger, gearing fe-.:mecting said vertical shaft with the driving shui@ and gearing for connecting said simil with the tool-spindle operating gearing;

In testimony whereof l :ziiix my Signzu'ue in presence of twu win BENGT Ji. 'itnesses:

F. E. .-Xxnnnux, FRANCES E. Bmnnn'i'.

'y'. HSON. 

